I see people complained it was shown under the join card, as a consequence it was removed from there and we have to go to the other card.
Since we got join cards we stopped using individual ones.
I was surprised I couldn’t see it anymore in its usual place.
It makes consulting the Barclaycars really annoying if I have to switch to the individual card that has been to 0£ for months.
Disappearing cards is the main issue we’re investigating, and working on a bunch of fixes to improve.
We’ll provide an update here once we think we’ve made a material difference, or need some more input from y’all.
Just a reminder, we released this in a very early state, so it is to be expected that things are a bit weird and inconsistent. We appreciate y’all dealing with the wigglyness, it really helps.
Longer term, we’ll allow you to decide which monzo account you see each external card listed under - for now we want to keep things simple by making them all show within your personal account.
Not sure if this has been suggested yet, but once details entered, would be good to have a visual indicator that something has happened.
Perhaps a placeholder which says ‘we’re adding credit card to your account list. This may take some time. We’ll send a notification when it’s ready’.
Then pop a notification when it’s successfully added.
I have added my card again, shows correctly in my personal account. I switch to joint, it briefly shows then disappears, go back to personal and it’s gone. A force close fixes this.
iOS 12.2
iPhone XS
App Version 2.43 #520
YES! Thank you… 
We added a ‘your card is on it’s way’ state into the apps last week, and are working on a ‘your card has disconnected’ state too. Should be released in the next week or so.
Iiiiiinteresting. Thanks for this.
How many other people with disappearing cards are switching to and from their joint account?
Noticed that I got the below notification to reconnect my card. Followed all the steps again and I can now see it 
After the above I switched to my joint account and back again - it’s still there 
Are you on wifi when you’re experiencing this? My hunch right now is that this is due to slow connection (the iOS app doesn’t currently save your card details locally, so it fetches them each time you view the account tab).
Yeah on wifi and happens with 4G too.
I’ve tried to connect my Barclaycard and although it says I’ve entered the correct details nothing appears in the app. I’ve tried twice and still nothing.
You need to wait a little while for it to appear, it’s not instant
If you check again later this evening it should hopefully be there 
Thanks for the reply but I tried this for the first time yesterday
My card disappeared for good and never came back. I switched a lot between the 2 types of account to search for it and tried to reconnect 3 times (always said success, never brought back the card). It’s because it was said here that it’s on the personal account only even if I never use it.
At first it was on the join account that I was looking at it. But it didn’t stay more than 24 hours.
iPhone XS iOS 12.2
Monzo 2.43.0 (disappeared before the update and never reappeared despite new attempts)
Edit: tried for the Xnd time and this time it is back. It works
Pretty smooth download of my CC! No problems, all looks good! The ability to pay off directly through Monzo would be amazing!
I had been seeing mine after an admittedly iffy initial sign up process but the balance and any mention of Barclaycard seem to have vanished now for me from my accounts tab 
MBNA would be good when you get a chance later on to add.
This would be the single most useful feature for me as well.